CHAPTER 19

Question 1

its the Central metabolic pathway and plays a key roles in aerobic metabolism

Answer 1

Citric acid cycle

Question 2

the electrons derived from oxidation of nutrients
are passed to oxygen

Answer 2

Electron transport

Question 3

Oxidative breakdown of nutrients | simpler to complex molecule

Answer 3

Catabolism

Question 4

Reductive synthesis of biomolecules | complex to simpler molecule

Answer 4

Anabolism

Question 5

Also called Krebs cycle or tricarboxylic acid cycle (TCA cycle)

Answer 5

Amphibolic

Question 6

where does Amphibolic takes place?

Answer 6

mitochondria

Question 7

it is oxidized and transferred to a sulfur atom of the reduced form of lipoamide

Answer 7

Hydroxyethyl group (HE)

Question 8

it is reduced to dihydrolipoamide

Answer 8

Lipoamide

Question 9

allosteric

Answer 9

enzyme that inhibited by NADH, ATP & succinyl-CoA

Question 10

is citrate achiral and has no stereocenter: T or F

Answer 10

True

Question 11

Oxidative decarboxylation of isocitrate to form a-ketoglutarate and CO2 is catalyzed by:

Answer 11

Isocitrate dehydrogenase

Question 12

Oxidative decarboxylation of α-ketoglutarate to form succinyl-CoA is catalyzed by:

Answer 12

a-ketoglutarate
dehydrogenase complex

Question 13

Thioester bond of succinyl-CoA is hydrolyzed to produce succinate and CoA-SH is catalyzed by:

Answer 13

succinyl-CoA synthetase

Question 14

Hydration of fumarate to form L-malate is catalyzed by:

Answer 14

fumarase

Question 15

Malate is oxidized to oxaloacetate, and another molecule of NAD reduced to NADH is catalyzed by:

Answer 15

malate dehydrogenase

Question 16

What is the gross ATP in glycolysis

Answer 16

4

Question 17

Net ATP in glycolysis

Answer 17

2

Question 18

Inhibited by ATP, NADH, succinyl CoA, and its
own product, citrate

Answer 18

Citrate synthase

Question 19

Activated by ADP and NAD+ and inhibited by
ATP and NADH

Answer 19

Isocitrate dehydrogenase

Question 20

Inhibited by ATP, NADH, and acetyl-CoA

Answer 20

Pyruvate dehydrogenase

Question 21

Pathway in plants and some bacteria that is an alternative to the citric acid cycle

Answer 21

GLYOXYLATE CYCLE

Question 22

Glyoxyalate cycle takes place in

Answer 22

Glyxosomes

Question 23

Reaction that ensures an adequate supply of an important metabolite

Answer 23

Anaplerotic reaction

Question 24

cannot be produced from acetyl-CoA in mammals

Answer 24

Pyruvate

Question 25

the principal energy and carbon source in animals

Answer 25

carbohydrates